On 13/05/09, 14:21:29, Peter FELECAN <[email protected]> wrote regarding Re: Compiler optimization Sun Studio vs. GCC:
> >> Didn't find it either. Well, my question was motivated to really > >> qualify > >> the differences, lets say on a scale of 1 to 100, how do we position > >> the > >> 2 compilers for SPARC generated code. Saying "very bad" is relative > >> but > >> to what and in what measure? > >> > >> Finally, is that so important for the kind of packages that we > >> provide? > >> For 1%, 10% or 66%... > > > > Maybe James or some other maintainer has real, first-hand performance > > data? > Let James wisdom shine upon us! What type of software, or specifically what, are we compiling? In many cases the "best" optimisation is "-xO3 -xspace" because fastest CPU alone isn't best. Unless a person is waiting or a machine is CPU saturated we don't need to worry. Think too about memory usage and if it has a very short run life load times (code size), be careful that repeated tests don't just test memory and disc cache performance. James. _______________________________________________ maintainers mailing list [email protected] https://lists.opencsw.org/mailman/listinfo/maintainers
